Structure of a bag

ABSTRACT

A bag structure with a bag body having an accommodation space inside; a first flap and a second flap provided between a front surface of the bag body and a rear surface of the bag body; a first end portions of the first flap and the second flap are formed integrally with a bottom surface of the bag body; the first flap is detachably connected with the rear surface and the front surface of the bag body a first zipper and a second zipper respectively; the second flap is detachably connected with the front surface of the bag body and the rear surface of the bag body through a third zipper and a fourth zipper respectively; a second end portion of the first flap is removably connected with a second end portion of the second flap.

BACKGROUND OF THE INVENTION

The present invention relates to the technical field of backpacks, and more specifically relates to a structure of a bag.

For the ease of carrying items outdoors, bags are designed for this purpose to carry items in the bags which users will bring along during outdoor activities. Bags currently available in the market are usually opened or closed through a single zipper. During use, the zipper may be easily pulled by mistakes, and the items inside may fall out.

BRIEF SUMMARY OF THE INVENTION

It is an object of the present invention to provide a simple structure of a bag to prevent mistaken pulling of the zipper which may otherwise causes items in the bag to fall out.

To achieve the above objects, the present invention provides the following technical solutions:

A structure of a bag, comprising a bag body in which an accommodation space is formed; a first flap and a second flap are provided between a front surface of the bag body and a rear surface of the bag body; a first end portion of the first flap is formed integrally with a bottom surface of the bag body; a first end portion of the second flap is also formed integrally with the bottom surface of the bag body; the first flap and the rear surface of the bag body are detachably connected through a first zipper; the first flap and the front surface of the bag body are detachably connected through a second zipper; the second flap and the front surface of the bag body is detachably connected through a third zipper; the second flap and the rear surface of the bag body are detachably connected through a fourth zipper; a second end portion of the first flap is removably connected with a second end portion of the second flap.

A first connecting strip is provided to connect a zipper head of the first zipper and a zipper head of the second zipper, and a second connecting strip is provided to connect a zipper head of the third zipper and a zipper head of the fourth zipper.

When the first flap closes against the front surface and the rear surface of the bag body, and the second flap closes against the front surface and the rear surface of the bag body, the second end portion of the first flap or the second end portion of the second flap passes under the first connecting strip and the second connecting strip.

Each of the first connecting strip and the second connecting strip has an arc shape.

The second end portion of the first flap and the second end portion of the second flap are removably connected to each other through hook and loop fasteners.

The structure of the bag also comprises at least one carrying strap removably connected to the bag body; said at least one carrying strap comprises one or two carrying straps.

When only one carrying strap is provided, two ends of the carry strap are connected to the front surface and the rear surface of the bag body respectively.

When two carrying straps are provided, the two carrying straps are fixed to the rear surface of the bag body and are arranged spaced apart from each other, and the carrying straps are adjustable in length.

The second end portion of the first flap and the second end portion of the second flap are removably connected to each other by magnetic connection.

By using the above technical solutions, when the first zipper is pulled up to close the first flap against the rear surface of the bag body, the second zipper is pulled up to close the first flap against the front surface of the bag body, the third zipper is pulled up to close the second flap against the front surface of the bag body, and the fourth zipper is pulled up to close the second flap against the rear surface of the bag body, the second end portion of the first flap can be removably connected with the second end portion of the second flap. Therefore, closure of the bag body is strengthened, so that the zippers will not be easily pulled by mistakes which otherwise causes items in the bag to fall out. The structures as given above by the present invention are also simple.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view when the present invention is embodied as a messenger bag.

FIG. 2 is a perspective view when the present invention is embodied as a backpack.

FIG. 3 is another perspective view of FIG. 2 when the bag is partially opened.

FIG. 4 is another perspective view of FIG. 1 when the bag is partially opened, the carrying strap is omitted for clearly illustration.

FIG. 5 is another perspective view of FIG. 3 when the bag is in another partially opened condition.

DETAILED DESCRIPTION OF THE INVENTION

The present invention is further explained in the following with reference to some embodiments and the accompanying drawings.

With reference to FIGS. 1-5 , the present invention discloses a structure of a bag, comprising a bag body 1 in which an accommodation space is formed; a first flap 13 and a second flap 14 are provided between a front surface 11 of the bag body 1 and a rear surface 12 of the bag body 1; a first end portion of the first flap 13 is formed integrally with a bottom surface of the bag body 1; a first end portion of the second flap 14 is also formed integrally with the bottom surface of the bag body 1; the first flap 13 and the rear surface 12 of the bag body 1 are detachably connected through a first zipper 131; the first flap 13 and the front surface 11 of the bag body 1 are detachably connected through a second zipper 132; the second flap 14 and the front surface 11 of the bag body 1 is detachably connected through a third zipper 141; the second flap 14 and the rear surface 12 of the bag body 1 are detachably connected through a fourth zipper 142; a second end portion of the first flap 13 is removably connected with a second end portion of the second flap 14.

Therefore, when the first zipper 131 is pulled up to close the first flap 13 against the rear surface 12 of the bag body 1, the second zipper 132 is pulled up to close the first flap 13 against the front surface 11 of the bag body 1, the third zipper 141 is pulled up to close the second flap 14 against the front surface 11 of the bag body 1, and the fourth zipper 142 is pulled up to close the second flap 14 against the rear surface 12 of the bag body 1, the second end portion of the first flap 13 can be removably connected with the second end portion of the second flap 14. Therefore, closure of the bag body 1 is strengthened, so that the zippers will not be easily pulled by mistakes which otherwise causes items in the bag to fall out. The structures as given above by the present invention are also simple.

Further, to facilitate synchronous movements of the first zipper 131 and the second zipper 132 so as the close the first flap 13 against the rear surface 12 and the front surface 11 of the bag body 1 synchronously, and to facilitate synchronous movements of the second zipper 141 and the fourth zipper 142 so as the close the second flap 14 against the front surface 11 and the rear surface 12 of the bag body 1 synchronously, a first connecting strip 133 is provided to connect a zipper head of the first zipper 131 and a zipper head of the second zipper 132, and a second connecting strip 143 is provided to connect a zipper head of the third zipper 141 and a zipper head of the fourth zipper 142.

Further, to facilitate pulling of the first connecting strip 133 and the second connecting strip 143, each of the first connecting strip 133 and the second connecting strip 143 has an arc shape.

Further, when the first flap 13 closes against the front surface 11 and the rear surface 12 of the bag body 1, and the second flap 14 closes against the front surface 11 and the rear surface 12 of the bag body 1, the second end portion of the first flap 13 or the second end portion of the second flap 14 passes under the first connecting strip 133 and the second connecting strip 143 so that the first connecting strip 133 and the second connecting strip 143 may press against the second portion of the first flap 13 or the second portion of the second flap 14 so as to fix the second portion of the first flap 13 or the second portion of the second flap 14 in position.

Further, for the sake of convenience, the second end portion of the first flap 13 and the second end portion of the second flap 14 are removably connected to each other through hook and loop fasteners 3; alternatively, the second end portion of the first flap 13 and the second end portion of the second flap 14 are removably connected to each other by magnetic connection.

The structure of the bag of the present invention also comprises at least one carrying strap 2 which can be disconnected from the bag body 1; said at least one carrying strap 2 comprises one or two carrying straps; when the bag of the present invention is embodied as a messenger bag, only one carrying strap 2 is provided with two ends of which connected to the front surface 11 and the rear surface 12 of the bag body 1 respectively, and a length of the carrying strap 2 is adjustable. When the bag of the present invention is embodied as a backpack, two carrying straps 2 are fixed to the rear surface 12 of the bag body 1 and are arranged spaced apart from each other, and the carrying straps 2 are also adjustable in length.

The above description only illustrates the preferred embodiments of the present invention, and should not be understood as limiting the scope of the present invention. Any changes or modifications of the specification and the claims made in accordance with the common technical knowledge of a person skilled in the art should fall within the scope of protection of the present invention. 

What is claimed is:
 1. A structure of a bag, comprising a bag body; a first flap and a second flap are provided between a front surface of the bag body and a rear surface of the bag body; a first end portion of the first flap is formed integrally with a bottom surface of the bag body; a first end portion of the second flap is also formed integrally with the bottom surface of the bag body; the first flap and the rear surface of the bag body are detachably connected through a first zipper; the first flap and the front surface of the bag body are detachably connected through a second zipper; the second flap and the front surface of the bag body is detachably connected through a third zipper; the second flap and the rear surface of the bag body are detachably connected through a fourth zipper; a second end portion of the first flap is removably connected with a second end portion of the second flap.
 2. The structure of the bag of claim 1, wherein a first connecting strip is provided to connect a zipper head of the first zipper and a zipper head of the second zipper, and a second connecting strip is provided to connect a zipper head of the third zipper and a zipper head of the fourth zipper.
 3. The structure of the bag of claim 2, wherein when the first flap closes against the front surface and the rear surface of the bag body, and the second flap closes against the front surface and the rear surface of the bag body, the second end portion of the first flap passes under the first connecting strip and the second connecting strip.
 4. The structure of the bag of claim 3, wherein each of the first connecting strip and the second connecting strip has an arc shape.
 5. The structure of the bag of claim 1, wherein the second end portion of the first flap and the second end portion of the second flap are removably connected to each other through hook and loop fasteners.
 6. The structure of the bag of claim 1, also comprising at least one carrying strap removably connected to the bag body; said at least one carrying strap comprises one or two carrying straps.
 7. The structure of the bag of claim 6, wherein when only one carrying strap is provided, two ends of the carry strap are connected to the front surface and the rear surface of the bag body respectively.
 8. The structure of the bag of claim 6, wherein when two carrying straps are provided, the two carrying straps are fixed to the rear surface of the bag body and are arranged spaced apart from each other.
 9. The structure of the bag of claim 6, wherein each carrying strap is adjustable in length. 